harmonic mean(n = noun.cognition) - the mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers;
is a kind of mean, mean value

arithmetic mean, first harmonic, geometric mean, golden mean, greenwich mean time, harmonic, harmonic analysis, harmonic law, harmonic motion, harmonic progression, mean, mean deviation, mean deviation from the mean, mean distance, mean solar day, mean solar time, mean sun, mean time, mean value, regression toward the mean, simple harmonic motion